215470932 has 12 divisors (see below), whose sum is σ = 502765536. Its totient is φ = 71823640.

The previous prime is 215470919. The next prime is 215470951. The reversal of 215470932 is 239074512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 215470893 and 215470902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8977944 + ... + 8977967.

It is an arithmetic number, because the mean of its divisors is an integer number (41897128).

Almost surely, 2^215470932 is an apocalyptic number.

It is an amenable number.

215470932 is an abundant number, since it is smaller than the sum of its proper divisors (287294604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215470932 is a wasteful number, since it uses less digits than its factorization.

215470932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17955918 (or 17955916 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 215470932 is about 14678.9281625056. The cubic root of 215470932 is about 599.5097217100.

The spelling of 215470932 in words is "two hundred fifteen million, four hundred seventy thousand, nine hundred thirty-two".